== load first file
LOAD CSV WITH HEADERS FROM "file:///skill_co_occurance3.csv" AS row
MERGE (src:Skill {name: row.Skill_1})
MERGE (tgt:Skill {name: row.Skill_2})
MERGE (src)-[r:CO_OCCURS]->(tgt) ON CREATE SET r.weight = toInteger(row.Users)

== Load second file
LOAD CSV WITH HEADERS FROM "file:///skill_rank.csv" AS row
MATCH (c:Skill {name: row.Skill})
SET c.skill_type = toInteger(row.Skill_Type_Id),
    c.skill_rank  = toFloat(row.Skill_Rank)